<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style>
body {
	text-align: center;
}

.centermiddle {
	margin-top: 50px;;
}
</style>
</head>
<body>
	<marquee id="affiche" behavior="scroll" direction="left" height="60"
		width="500" loop="-1" scrollamount="7" scrolldelay="100">
		<h2>欢迎来到学生学习行为管理系统</h2>
	</marquee>
	<div class="container">
		<div class="centermiddle">
			<img src="images/main.jpg">
		</div>
	</div>
</body>
</html>